mirror of https://github.com/minio/minio.git
118 lines
3.6 KiB
Go
118 lines
3.6 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package compress
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import (
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"fmt"
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"strings"
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"github.com/minio/minio/cmd/config"
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"github.com/minio/minio/pkg/env"
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)
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// Config represents the compression settings.
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type Config struct {
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Enabled bool `json:"enabled"`
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Extensions []string `json:"extensions"`
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MimeTypes []string `json:"mime-types"`
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}
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// Compression environment variables
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const (
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Extensions = "extensions"
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MimeTypes = "mime_types"
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EnvCompressState = "MINIO_COMPRESS_STATE"
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EnvCompressExtensions = "MINIO_COMPRESS_EXTENSIONS"
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EnvCompressMimeTypes = "MINIO_COMPRESS_MIME_TYPES"
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// Include-list for compression.
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DefaultExtensions = ".txt,.log,.csv,.json,.tar,.xml,.bin"
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DefaultMimeTypes = "text/*,application/json,application/xml"
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)
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// DefaultKVS - default KV config for compression settings
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var (
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DefaultKVS = config.KVS{
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config.State: config.StateOff,
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config.Comment: "This is a default compression configuration",
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Extensions: DefaultExtensions,
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MimeTypes: DefaultMimeTypes,
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}
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)
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// Parses the given compression exclude list `extensions` or `content-types`.
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func parseCompressIncludes(includes []string) ([]string, error) {
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for _, e := range includes {
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if len(e) == 0 {
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return nil, config.ErrInvalidCompressionIncludesValue(nil).Msg("extension/mime-type cannot be empty")
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}
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}
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return includes, nil
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}
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// LookupConfig - lookup compression config.
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func LookupConfig(kvs config.KVS) (Config, error) {
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var err error
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cfg := Config{}
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if err = config.CheckValidKeys(config.CompressionSubSys, kvs, DefaultKVS); err != nil {
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return cfg, err
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}
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compress := env.Get(EnvCompress, "")
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if compress == "" {
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compress = env.Get(EnvCompressState, kvs.Get(config.State))
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}
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cfg.Enabled, err = config.ParseBool(compress)
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if err != nil {
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return cfg, err
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}
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if !cfg.Enabled {
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return cfg, nil
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}
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compressExtensions := env.Get(EnvCompressExtensions, kvs.Get(Extensions))
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compressMimeTypes := env.Get(EnvCompressMimeTypes, kvs.Get(MimeTypes))
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compressMimeTypesLegacy := env.Get(EnvCompressMimeTypesLegacy, kvs.Get(MimeTypes))
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if compressExtensions != "" || compressMimeTypes != "" || compressMimeTypesLegacy != "" {
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if compressExtensions != "" {
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extensions, err := parseCompressIncludes(strings.Split(compressExtensions, config.ValueSeparator))
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if err != nil {
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return cfg, fmt.Errorf("%s: Invalid MINIO_COMPRESS_EXTENSIONS value (`%s`)", err, extensions)
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}
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cfg.Extensions = extensions
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}
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if compressMimeTypes != "" {
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mimeTypes, err := parseCompressIncludes(strings.Split(compressMimeTypes, config.ValueSeparator))
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if err != nil {
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return cfg, fmt.Errorf("%s: Invalid MINIO_COMPRESS_MIME_TYPES value (`%s`)", err, mimeTypes)
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}
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cfg.MimeTypes = mimeTypes
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}
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if compressMimeTypesLegacy != "" {
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mimeTypes, err := parseCompressIncludes(strings.Split(compressMimeTypesLegacy,
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config.ValueSeparator))
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if err != nil {
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return cfg, fmt.Errorf("%s: Invalid MINIO_COMPRESS_MIME_TYPES value (`%s`)", err, mimeTypes)
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}
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cfg.MimeTypes = mimeTypes
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}
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}
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return cfg, nil
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}
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